﻿using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.IO;
using System.Linq;
using System.Reflection;
using System.Runtime.Serialization;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading.Tasks;
using System.Web;
using System.Web.Script.Serialization;
using System.Xml.Serialization;
using NewLife;
using NewLife.Data;
using NewLife.Log;
using NewLife.Model;
using NewLife.Reflection;
using NewLife.Threading;
using NewLife.Web;
using XCode;
using XCode.Cache;
using XCode.Configuration;
using XCode.DataAccessLayer;
using XCode.Membership;
using XCode.Shards;

namespace Stardust.Data.Monitors
{
    public partial class TraceRule : Entity<TraceRule>
    {
        #region 对象操作
        static TraceRule()
        {
            // 累加字段，生成 Update xx Set Count=Count+1234 Where xxx
            //var df = Meta.Factory.AdditionalFields;
            //df.Add(nameof(UpdateUserID));

            // 过滤器 UserModule、TimeModule、IPModule
            Meta.Modules.Add<UserModule>();
            Meta.Modules.Add<TimeModule>();
            Meta.Modules.Add<IPModule>();
        }

        /// <summary>验证并修补数据，通过抛出异常的方式提示验证失败。</summary>
        /// <param name="isNew">是否插入</param>
        public override void Valid(Boolean isNew)
        {
            // 如果没有脏数据，则不需要进行任何处理
            if (!HasDirty) return;

            // 建议先调用基类方法，基类方法会做一些统一处理
            base.Valid(isNew);

            // 在新插入数据或者修改了指定字段时进行修正
            // 处理当前已登录用户信息，可以由UserModule过滤器代劳
            /*var user = ManageProvider.User;
            if (user != null)
            {
                if (!Dirtys[nameof(UpdateUserID)]) UpdateUserID = user.ID;
            }*/
            //if (isNew && !Dirtys[nameof(CreateTime)]) CreateTime = DateTime.Now;
            //if (!Dirtys[nameof(UpdateTime)]) UpdateTime = DateTime.Now;
            //if (isNew && !Dirtys[nameof(CreateIP)]) CreateIP = ManageProvider.UserHost;
            //if (!Dirtys[nameof(UpdateIP)]) UpdateIP = ManageProvider.UserHost;
        }

        /// <summary>首次连接数据库时初始化数据，仅用于实体类重载，用户不应该调用该方法</summary>
        [EditorBrowsable(EditorBrowsableState.Never)]
        protected override void InitData()
        {
            // InitData一般用于当数据表没有数据时添加一些默认数据，该实体类的任何第一次数据库操作都会触发该方法，默认异步调用
            if (Meta.Session.Count > 0) return;

            if (XTrace.Debug) XTrace.WriteLine("开始初始化TraceRule[跟踪规则]数据……");

            var entity = new TraceRule
            {
                Rule = "^/Admin/[A-Z]\\w+",
                Enable = true,
                IsWhite = true,
                IsRegex = true,
            };
            entity.Insert();

            entity = new TraceRule
            {
                Rule = "^/Cube/[A-Z]\\w+",
                Enable = true,
                IsWhite = true,
                IsRegex = true,
            };
            entity.Insert();

            entity = new TraceRule
            {
                Rule = "/Sso/*",
                Enable = true,
                IsWhite = true,
            };
            entity.Insert();

            if (XTrace.Debug) XTrace.WriteLine("完成初始化TraceRule[跟踪规则]数据！");
        }
        #endregion

        #region 扩展属性
        #endregion

        #region 扩展查询
        /// <summary>根据编号查找</summary>
        /// <param name="id">编号</param>
        /// <returns>实体对象</returns>
        public static TraceRule FindById(Int32 id)
        {
            if (id <= 0) return null;

            // 实体缓存
            if (Meta.Session.Count < 1000) return Meta.Cache.Find(e => e.Id == id);

            // 单对象缓存
            return Meta.SingleCache[id];

            //return Find(_.Id == id);
        }
        #endregion

        #region 高级查询

        // Select Count(Id) as Id,Category From TraceRule Where CreateTime>'2020-01-24 00:00:00' Group By Category Order By Id Desc limit 20
        //static readonly FieldCache<TraceRule> _CategoryCache = new FieldCache<TraceRule>(nameof(Category))
        //{
        //Where = _.CreateTime > DateTime.Today.AddDays(-30) & Expression.Empty
        //};

        ///// <summary>获取类别列表，字段缓存10分钟，分组统计数据最多的前20种，用于魔方前台下拉选择</summary>
        ///// <returns></returns>
        //public static IDictionary<String, String> GetCategoryList() => _CategoryCache.FindAllName();
        #endregion

        #region 业务操作
        /// <summary>获取有效规则</summary>
        /// <returns></returns>
        public static IList<TraceRule> GetValids() => FindAllWithCache().Where(e => e.Enable && !e.Rule.IsNullOrEmpty()).OrderByDescending(e => e.Priority).ToList();

        Regex _regex;
        /// <summary>是否匹配输入</summary>
        /// <param name="input"></param>
        /// <returns></returns>
        public Boolean IsMatch(String input)
        {
            if (input.IsNullOrWhiteSpace()) return false;
            if (Rule.IsNullOrEmpty()) return false;

            if (IsRegex)
            {
                _regex ??= new Regex(Rule, RegexOptions.Compiled);
                return _regex.IsMatch(input);
            }
            else
            {
                if (Rule.EqualIgnoreCase(input)) return true;
                if (Rule.IsMatch(input)) return true;
            }

            return false;
        }

        /// <summary>尝试使用所有规则匹配目标输入</summary>
        /// <param name="input">目标输入</param>
        /// <returns></returns>
        public static TraceRule Match(String input)
        {
            if (input.IsNullOrWhiteSpace()) return null;

            input = input.Trim().ToLower();

            var rules = GetValids();
            foreach (var rule in rules)
            {
                if (rule.IsMatch(input)) return rule;
            }

            return null;
        }
        #endregion
    }
}